Verrrry interesting.
However there is one type of Hyperion outrunner not copied or sold by other retail brands which is of course the GS Glider series with the beveled front end bell.
One has to wonder why it is that companies such as Hyperion and Hacker charge so much for their motors if they're buying them from the same OEM manufacturer as the others.

Oliver, as far as servos go, I have been using some of the smaller mini and micro servos such as Blue Bird, Blue Arrow and others and found them to be ok. For larger servos for larger planes, I still use HItec. Companies such as JR, Futaba, Airtronics and Spectrum DX have a reputation to protect and probably very closely monitor the manufacturer. I know Hitec Radios are made in S.Korea so one might assume the servos are made there as well. It all depends on what size plane you're going to fly with them. If it's a foamy and not too big you probably would do ok with the Chinese versions I presume you saw them at H.K. I have no idea where the big name companies get their servos but they are good especially JR. Who knows where Jeti gets their servos, maybe they make their own.
For large planes and especially if you've got some money invested in them, I personally stay with the major brands...they have a long track record of proven reliability and of course customer service. After all if you've got hundreds or even thousands in a plane, heli or boat, would you be willing to use a $10 servo from H.K? I know I would not.